* problems when malloc/free pairs
* don't match etc. */
-/* may be changed as long as `allow_customize' is set */
-static void *(*malloc_locked_func)(size_t) = malloc;
-static void (*free_locked_func)(void *) = free;
+
+
+/* the following pointers may be changed as long as 'allow_customize' is set */
+
static void *(*malloc_func)(size_t) = malloc;
+static void *default_malloc_ex(size_t num, const char *file, int line)
+ { return malloc_func(num); }
+static void *(*malloc_ex_func)(size_t, const char *file, int line)
+ = default_malloc_ex;
+
static void *(*realloc_func)(void *, size_t)= realloc;
+static void *default_realloc_ex(void *str, size_t num,
+ const char *file, int line)
+ { return realloc_func(str,num); }
+static void *(*realloc_ex_func)(void *, size_t, const char *file, int line)
+ = default_realloc_ex;
+
static void (*free_func)(void *) = free;
-static void *crypto_i_malloc_ex(size_t, const char *file, int line);
-static void *crypto_i_realloc_ex(void *, size_t, const char *file, int line);
-static void crypto_i_free_ex(void *);
+static void *(*malloc_locked_func)(size_t) = malloc;
+static void *default_malloc_locked_ex(size_t num, const char *file, int line)
+ { return malloc_locked_func(num); }
static void *(*malloc_locked_ex_func)(size_t, const char *file, int line)
- = crypto_i_malloc_ex;
-static void (*free_locked_ex_func)(void *)
- = crypto_i_free_ex;
-static void *(*malloc_ex_func)(size_t, const char *file, int line)
- = crypto_i_malloc_ex;
-static void *(*realloc_ex_func)(void *, size_t, const char *file, int line)
- = crypto_i_realloc_ex;
-static void (*free_ex_func)(void *)
- = crypto_i_free_ex;
+ = default_malloc_locked_ex;
-/* may be changed as long as `allow_customize_debug' is set */
+static void (*free_locked_func)(void *) = free;
+
+
+
+/* may be changed as long as 'allow_customize_debug' is set */
/* XXX use correct function pointer types */
#ifdef CRYPTO_MDEBUG
/* use default functions from mem_dbg.c */
static long (*get_debug_options_func)(void) = NULL;
#endif
-
int CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t),
void (*f)(void *))
{
+ /* Dummy call just to ensure OPENSSL_init() gets linked in */
+ OPENSSL_init();
if (!allow_customize)
return 0;
- if ((m == NULL) || (r == NULL) || (f == NULL))
+ if ((m == 0) || (r == 0) || (f == 0))
return 0;
- malloc_func=m;
- realloc_func=r;
+ malloc_func=m; malloc_ex_func=default_malloc_ex;
+ realloc_func=r; realloc_ex_func=default_realloc_ex;
free_func=f;
- malloc_locked_func=m;
+ malloc_locked_func=m; malloc_locked_ex_func=default_malloc_locked_ex;
free_locked_func=f;
return 1;
}
{
if (!allow_customize)
return 0;
- if (m == NULL) m = crypto_i_malloc_ex;
- if (r == NULL) r = crypto_i_realloc_ex;
- if (f == NULL) f = crypto_i_free_ex;
- malloc_ex_func=m;
- realloc_ex_func=r;
- free_ex_func=f;
- malloc_locked_ex_func=m;
- free_locked_ex_func=f;
+ if ((m == 0) || (r == 0) || (f == 0))
+ return 0;
+ malloc_func=0; malloc_ex_func=m;
+ realloc_func=0; realloc_ex_func=r;
+ free_func=f;
+ malloc_locked_func=0; malloc_locked_ex_func=m;
+ free_locked_func=f;
return 1;
}
return 0;
if ((m == NULL) || (f == NULL))
return 0;
- malloc_locked_func=m;
+ malloc_locked_func=m; malloc_locked_ex_func=default_malloc_locked_ex;
free_locked_func=f;
return 1;
}
{
if (!allow_customize)
return 0;
- if (m == NULL) m = crypto_i_malloc_ex;
- if (f == NULL) f = crypto_i_free_ex;
- malloc_locked_ex_func=m;
- free_locked_ex_func=f;
+ if ((m == NULL) || (f == NULL))
+ return 0;
+ malloc_locked_func=0; malloc_locked_ex_func=m;
+ free_func=f;
return 1;
}
return 1;
}
+
void CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t),
void (**f)(void *))
{
- if (m != NULL) *m=malloc_func;
- if (r != NULL) *r=realloc_func;
+ if (m != NULL) *m = (malloc_ex_func == default_malloc_ex) ?
+ malloc_func : 0;
+ if (r != NULL) *r = (realloc_ex_func == default_realloc_ex) ?
+ realloc_func : 0;
if (f != NULL) *f=free_func;
}
void *(**r)(void *, size_t,const char *,int),
void (**f)(void *))
{
- if (m != NULL) *m=malloc_ex_func;
- if (r != NULL) *r=realloc_ex_func;
- if (f != NULL) *f=free_ex_func;
+ if (m != NULL) *m = (malloc_ex_func != default_malloc_ex) ?
+ malloc_ex_func : 0;
+ if (r != NULL) *r = (realloc_ex_func != default_realloc_ex) ?
+ realloc_ex_func : 0;
+ if (f != NULL) *f=free_func;
}
void CRYPTO_get_locked_mem_functions(void *(**m)(size_t), void (**f)(void *))
{
- if (m != NULL) *m=malloc_locked_func;
+ if (m != NULL) *m = (malloc_locked_ex_func == default_malloc_locked_ex) ?
+ malloc_locked_func : 0;
if (f != NULL) *f=free_locked_func;
}
void *(**m)(size_t,const char *,int),
void (**f)(void *))
{
- if (m != NULL) *m=malloc_locked_ex_func;
- if (f != NULL) *f=free_locked_ex_func;
+ if (m != NULL) *m = (malloc_locked_ex_func != default_malloc_locked_ex) ?
+ malloc_locked_ex_func : 0;
+ if (f != NULL) *f=free_locked_func;
}
void CRYPTO_get_mem_debug_functions(void (**m)(void *,int,const char *,int,int),
{
void *ret = NULL;
+ if (num <= 0) return NULL;
+
allow_customize = 0;
if (malloc_debug_func != NULL)
{
if (malloc_debug_func != NULL)
malloc_debug_func(ret, num, file, line, 1);
+#ifndef OPENSSL_CPUID_OBJ
+ /* Create a dependency on the value of 'cleanse_ctr' so our memory
+ * sanitisation function can't be optimised out. NB: We only do
+ * this for >2Kb so the overhead doesn't bother us. */
+ if(ret && (num > 2048))
+ { extern unsigned char cleanse_ctr;
+ ((unsigned char *)ret)[0] = cleanse_ctr;
+ }
+#endif
+
return ret;
}
#ifdef LEVITTE_DEBUG_MEM
fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str);
#endif
- free_locked_ex_func(str);
+ free_locked_func(str);
if (free_debug_func != NULL)
free_debug_func(NULL, 1);
}
{
void *ret = NULL;
+ if (num <= 0) return NULL;
+
allow_customize = 0;
if (malloc_debug_func != NULL)
{
if (malloc_debug_func != NULL)
malloc_debug_func(ret, num, file, line, 1);
+#ifndef OPENSSL_CPUID_OBJ
+ /* Create a dependency on the value of 'cleanse_ctr' so our memory
+ * sanitisation function can't be optimised out. NB: We only do
+ * this for >2Kb so the overhead doesn't bother us. */
+ if(ret && (num > 2048))
+ { extern unsigned char cleanse_ctr;
+ ((unsigned char *)ret)[0] = cleanse_ctr;
+ }
+#endif
+
+ return ret;
+ }
+char *CRYPTO_strdup(const char *str, const char *file, int line)
+ {
+ char *ret = CRYPTO_malloc(strlen(str)+1, file, line);
+
+ strcpy(ret, str);
return ret;
}
{
void *ret = NULL;
+ if (str == NULL)
+ return CRYPTO_malloc(num, file, line);
+
+ if (num <= 0) return NULL;
+
if (realloc_debug_func != NULL)
realloc_debug_func(str, NULL, num, file, line, 0);
ret = realloc_ex_func(str,num,file,line);
return ret;
}
+void *CRYPTO_realloc_clean(void *str, int old_len, int num, const char *file,
+ int line)
+ {
+ void *ret = NULL;
+
+ if (str == NULL)
+ return CRYPTO_malloc(num, file, line);
+
+ if (num <= 0) return NULL;
+
+ /* We don't support shrinking the buffer. Note the memcpy that copies
+ * |old_len| bytes to the new buffer, below. */
+ if (num < old_len) return NULL;
+
+ if (realloc_debug_func != NULL)
+ realloc_debug_func(str, NULL, num, file, line, 0);
+ ret=malloc_ex_func(num,file,line);
+ if(ret)
+ {
+ memcpy(ret,str,old_len);
+ OPENSSL_cleanse(str,old_len);
+ free_func(str);
+ }
+#ifdef LEVITTE_DEBUG_MEM
+ fprintf(stderr,
+ "LEVITTE_DEBUG_MEM: | 0x%p -> 0x%p (%d)\n",
+ str, ret, num);
+#endif
+ if (realloc_debug_func != NULL)
+ realloc_debug_func(str, ret, num, file, line, 1);
+
+ return ret;
+ }
+
void CRYPTO_free(void *str)
{
if (free_debug_func != NULL)
#ifdef LEVITTE_DEBUG_MEM
fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str);
#endif
- free_ex_func(str);
+ free_func(str);
if (free_debug_func != NULL)
free_debug_func(NULL, 1);
}
return(a);
}
-
void CRYPTO_set_mem_debug_options(long bits)
{
if (set_debug_options_func != NULL)
return get_debug_options_func();
return 0;
}
-
-static void *crypto_i_malloc_ex(size_t num, const char *file, int line)
- {
- return malloc_func(num);
- }
-
-static void *crypto_i_realloc_ex(void *str, size_t num,
- const char *file, int line)
- {
- return realloc_func(str,num);
- }
-
-static void crypto_i_free_ex(void *str)
- {
- free_func(str);
- }
projects / openssl.git / blobdiff